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Nibi Metrics

Real-time water levels, forecasts, and alerts for lakes and rivers across Canada and the US. Built on official government data.

Nibi Metrics turns raw gauge readings from official hydrometric networks into something a person standing on a dock can actually use: is the water high or low for today, which way is it moving, and how unusual is this? This page explains where every number on the platform comes from and what we do to it along the way.

Water Stories

The flood of record that was overtaken

For five years, spring 2019 was the mark every Lake Muskoka decision answered to. In April 2026 the lake went two centimeters higher - and the official books have not caught up yet.

Why the Assiniboine floods every spring

Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.

How snowpack becomes summer water

The science of snow water equivalent and why it drives the season ahead.

Reading a staff gauge like a hydrologist

What the numbers on the measuring stick actually tell you.

Flash Flood Alley: how Texas rivers rise in hours

Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.

What a "100-year flood" actually means

One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.

Rio de la Plata at Comerio Water Level

Live river level, flow, historical records and forecast for Rio de la Plata at Comerio in PR, United States, built from official government gauge data.

About Rio de la Plata at Comerio

Rio de la Plata - A vital watercourse in Eastern Puerto Rico.

The Rio de la Plata flows gracefully through the lush landscapes of Eastern Puerto Rico, serving as an essential water source for both the ecosystem and local communities. This river, with a drainage area of roughly 117 square miles above the USGS gauge at Comerio, plays a key role in managing the region's responsive hydrology marked by rainfall-driven events and the potential for flash flooding, particularly during hurricane seasons and tropical waves.

The watershed context

The watershed encompassing the Rio de la Plata supports a diverse environment as it engages with the unique climatic characteristics of the region. Rainfall patterns throughout the year contribute to rapid changes in water levels, particularly during periods of intense precipitation. This tropical island hydrology means that water levels can rise sharply within hours, influencing both the surrounding ecosystems and human activities. The river serves as a critical component of this dynamic system, providing runoff that nourishes both natural habitats and agricultural areas nearby.

In proximity to the Rio de la Plata, several waterways—such as Lago Carite and various quebradas—compose a network of interconnected ecosystems. These peers support a wide range of flora and fauna, contributing to the rich biological diversity found in Eastern Puerto Rico.

Why the data matters here

Monitoring the Rio de la Plata's flow is vital for anticipating flooding risks, particularly during the intense rainy seasons. With a historical dataset spanning 38 years from the USGS, the discharge measurements provide an invaluable record that helps local authorities and communities prepare for potential flood events.

Today's reading from the gauge at Comerio offers an essential perspective by comparing the current flow against the historical median for this calendar day. This context helps residents and stakeholders understand whether the river is experiencing typical variation or is trending towards potentially hazardous conditions. Accurate data is crucial in this tropical landscape where flooding can occur suddenly and with little warning, underscoring the significance of reliable measurements in promoting safety and preparedness in the face of nature’s volatility.

How this page is built

Readings come from official government gauges and are rolled into daily records: the daily mean, high and low for every day on record. Each calendar day gets its own baseline from the full history, so the level you see is compared against what this specific date usually looks like rather than an annual average.

How Nibi Metrics works · Water stories